import turtle
import random

pen = turtle.Turtle()
pen.pensize(15)
pen.speed(0)
screen = turtle.Screen()
screen.setup(800, 800)
colors =["red","blue","green","black","gold","yellow"]

circle_count = 7
initial_radius = 50
radius_increment = 30

for _ in range(circle_count):
    pen.color(colors[random.randint(0,len(colors)-1)])
    pen.penup()
    pen.goto(0, -initial_radius)
    pen.pendown()
    pen.circle(initial_radius)
    initial_radius += radius_increment

turtle.done()
